package com.atguigu.gulimall.product.config;


import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.cache.CacheProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.StringRedisSerializer;

//自动配置文件注入进来
@EnableConfigurationProperties(value = CacheProperties.class)
@EnableCaching
@Configuration
public class MyCacheConfig {
    //    方式1
    @Autowired
    CacheProperties cacheProperties;

    @Bean
    public RedisCacheConfiguration cacheProperties() {
        //默认配置
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig();

        //json序列化
        config = config.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()));
        config = config.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer()));

        //配置文件yml里面的过期时间没有生效，原因:需要将自动配置的配置文件注入进来
        //获取到类型为redis的配置
        CacheProperties.Redis redisProperties = cacheProperties.getRedis();
        //覆盖配置
        if (redisProperties.getTimeToLive() != null) {
            config = config.entryTtl(redisProperties.getTimeToLive());
        }

        if (redisProperties.getKeyPrefix() != null) {
            config = config.prefixKeysWith(redisProperties.getKeyPrefix());
        }
        if (!redisProperties.isCacheNullValues()) {
            config = config.disableCachingNullValues();
        }
        if (!redisProperties.isUseKeyPrefix()) {
            config = config.disableKeyPrefix();
        }

        return config;
    }
}
